pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5639-Humours.ps) >>/Users/jc/w/tmp/Tune-5639-get.log 2>&1" returned status 256
http://www.rudemex.co.uk/library/ABC/Humours of Ennistymon.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_56391.log 401546 Log file, useful mostly for debugging
Tune-5639-Humours.abc 527 ABC music file with the extracted tune(s)
Tune-5639-Humours.ps 37377 PostScript
Tune-5639-Humours.txt 527 Plain-text file with the extracted tune(s)
Tune-5639-get.log 10537 Log file, useful mostly for debugging
These files should be available for 24 hours.